4 years ago

An elephant can run one over four mile in 36 seconds. Which of the following correctly shows this rate as miles per hour?

Mathematics

1 answer:

Paha777 [63]4 years ago

4 0

36 x 4 =144 per hour

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Lorico [155]

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3 years ago

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Keith_Richards [23]

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3 years ago

How would the expression x^3+64 be rewritten using sum off cubes

Mamont248 [21]

$\bf \textit{difference of cubes}
\\ \quad \\
a^3+b^3 = (a+b)(a^2-ab+b^2)\qquad
(a+b)(a^2-ab+b^2)= a^3+b^3 \\ \quad \\
a^3-b^3 = (a-b)(a^2+ab+b^2)\qquad
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-------------------------------\\\\
\boxed{64=4^3}\qquad x^3+64\implies x^3+4^3\implies (x+4)(x^2-x4+4^2)
\\\\\\
(x+4)(x^2-4x+16)$